Home
Class 12
CHEMISTRY
The activation energy for the forward re...

The activation energy for the forward reaction `X rarr Y` is `60 kJ mol^(-1)` and `Delta H` is `-20 kJ mol^(-1)`. The activation energy for the reverse reaction is

A

`80 "kJ mol"^(-1)`

B

`40 "kJ mol"^(-1)`

C

`60 "kJ mol"^(-1)`

D

`20 "kJ mol"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta H = E_(a_x) -E_(a_y)`
`-20 = 60 -E_(0_t)` So `E_(a_t) = 80`
Promotional Banner

Topper's Solved these Questions

  • MOLECULARITY

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|30 Videos

  • MOLECULARITY

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|30 Videos

  • HYDROGEN

    PHYSICS WALLAH|Exercise LEVEL-2|58 Videos

  • ORGANIC CHEMISTRY

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS |13 Videos

Similar Questions

Explore conceptually related problems

In an exothermic reaction A rarr B , the activation energy of the forward reaction is 200 kJ mol^(-1) . The enthalpy of the reaction is 280 kJ mol^(-1) . The activation energy of the reverse reaction B rarr A is

The activation energy of exothermic reaction ArarrB is 80 kJ "mol"^(-1) . The heat of reaction is 200 kJ "mol"^(-1) . The activation energy for the reaction Brarra ( in kJ/mol) will be :

The reaction X to Y is an exothermic reaction. Activation energy of the reaction for X into Y is 150 kJ mol^(-1) . Enthalpy of reaction is 135 kJ "mol"^(-1) . Calculate the activation energy for the reverse reaction, Y to X in kJ mol^(-1) .

If the activation enery for the forward reaction is 150 "kJ mol"^(-1) and that of the reverse reaction is 260 "kJ mol"^(-1) . What is the ethalpy change for the reaction ?

For a reaction A rarr B, E_(a) = 10 kJ mol^(-1), DeltaH = 5 kJ mol^(-1) . Thus, potential energy profile for this reaction is:

The reaction A+B rarr AB has an enthalpy of reaction of -85.0 KJ- "mol"^(-1) . If the activation ehthalpy for the forward reaction is 120.0 KJ "mol"^(-1) , What is the activation energy for the reverse reaction AB rarr A+B?

In an exothermic reaction X rarr Y , the activation energy is 100 kJ mol^(-1) of X . The enthalphy of the reaction is -140 kJ mol^(-1) . The activation energy of the reverse reaction Y rarr X is

PHYSICS WALLAH-MOLECULARITY -LEVEL-2
  1. K for a zero order reaction is 2 xx 10^(-2) "mol L"^(-1) "sec"^(-1). I...

    Text Solution

    |

  2. In a certain reaction, 10% of the reactant decomposes in one hour, 20%...

    Text Solution

    |

  3. The given reaction 2 "FeCI"3 + "SnCI"2 to 2"FeCI"2 + "SnCI"4 is an...

    Text Solution

    |

  4. The rate constant for a reaction is ("In 2")/(10) " min"^(-1). What wi...

    Text Solution

    |

  5. For the reaction A rarr" Product, "-(d[A])/(dt)=k and at different tim...

    Text Solution

    |

  6. Consider the reaction 2A(g) rarr 3B(g) + C(g). Starting with pure A in...

    Text Solution

    |

  7. Let there be as first-order reaction of th type. A to B + C Let us ass...

    Text Solution

    |

  8. Rate of which reactions increases with temperature:

    Text Solution

    |

  9. The rate constant, the activation energy and the Arrhenius parameter o...

    Text Solution

    |

  10. The activation energy for the forward reaction X rarr Y is 60 kJ mol^(...

    Text Solution

    |

  11. For a given reaction, energy of activation for forward reaction (E(af)...

    Text Solution

    |

  12. In the reaction NH(4)NO(2)(aq.) rarr N(2)(g) + 2H(2)O(l) the volume of...

    Text Solution

    |

  13. In a first order reaction A to B, if k is rate constant and initial co...

    Text Solution

    |

  14. For a reaction following n^(th) order kinetics, the half life (t(1//2)...

    Text Solution

    |

  15. For the reaction, 2N(2)O(5)to4NO(2)+O(2) rate and rate constant are 1....

    Text Solution

    |

  16. 3A rarr B + C It would be a zero order reaction when :

    Text Solution

    |

  17. If the rate of the reaction is equal to the rate constant , the order ...

    Text Solution

    |

  18. In a first order reaction A to B, if k is rate constant and initial co...

    Text Solution

    |

  19. The rate constant k(1) and k(2) for two different reactions are 10^(16...

    Text Solution

    |

  20. Which one of the following statements for the reaction is incorrect?

    Text Solution

    |